The total length of a first class lever is 9.0 ft. This is used to move a load of 390 lbs, as pictured below. How much effort must be applied?

Q: The pendulum has a mass of 1 kg and in figure (a) it is moved to a maximum vertical position of 1.8 ...

A: Given: Mass of pendulum = 1kg Highest position =1.8 m Half height = 0.9 m acceleration due to gravit...

Q: 1. Who was the first African American engineer to work for NCTA? 2. What does NCTA stand for? 3. Wha...

A: Q 1) Willian T.Fauntroy, Jr. was the first African American civil engineer hired by the NCTA, predec...

Q: A ball has an initial velocity of 1.50 m/s along the x-axis. Starting at t0=0, the ball receives an ...

A: The velocity of an object accelerating is given by v= u+at, where u = initial velocity, a = accelera...

Q: A student holds a tuning fork oscillating at 255 Hz. He walks toward a wall at a constant speed of 1...

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Q: - 5.5 A 7000-kg plane has two propellers, each of which takes in air at a rate d 45 kg/s, imparting ...

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Q: problem, the symbols M, L, and T represent the dimensions mass, length, and time, respectively. Cons...

A: Dimension of a quantity and its change has same value. 

Q: D= B-A NOTE A = 3 B = 3 Angle between A and B = 60° Please solve and no reject thank u this ques...

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Q: twelve story building and look over the edge to the reflecting pool 170 feet below. You drop your bo...

A: We know that the third equation of motion is given as  v2= u2+2as here v is the final velocity, u is...

Q: Base your answers to questions 94 the information and diagram below. A 1.00-kilogram sphere M, suspe...

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Q: A Carnot cycle: A A) is bounded by two isotherms and two adiabats on a p-V graph B B) consists of tw...

A: The Carnot cycle consists of four processes: A reversible isothermal gas expansion process. A reve...

Q: match what happens when a ferromagnetic material is placed in an external magnetic field. a. The fer...

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Q: (11%) Problem 12: A capacitor with a capacitance of 3.5 pF is initially uncharged. It is connected i...

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Q: The A string on a cello vibrates in its first normal mode with a frequency of 220 Hz. The vibrating ...

A: Given: The frequency of the first normal mode is 220 Hz. The length of the string is 75 cm. The mass...

Q: A body of mass 10.0 kg is shown below. Assume only the shown forces act on the body.Enter an express...

A: given:

Q: Figure below shows a bead sliding on a wire. If friction forces are negligible and the bead has a sp...

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Q: A soccer ball is kicked 20 m/s at 40 degrees above the horizontal. a) What is the vertical component...

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Q: Explain the purpose of the chains dangling from the rear of gasoline trucks.

A: The tyres of the truck moving on the ground encounter friction with the road. This friction causes t...

Q: 1. In this problem, you will determine the finest detail that the human eye can discern at a set dis...

A: Given data: Distance between retina and pinhole r = 17 mm Density of cones = 150000/mm2 In part a), ...

Q: A 20 kg box rests on a table. a) What force does the earth exert on the box? Draw a free body diagra...

A: Solution: Given that m=20 kg

Q: 7. In an AC circuit there are two devices connected in series. If the current in the circuit and the...

A: Total current in the circuit (I) = 2 Sin(2000t + 1.801) Ampere Total voltage in the circuit (V) = 10...

Q: A 200-N sled of slides down a frictionless hillside that rises at 37° above the h magnitude of the n...

A: We know that we have given The sled has a weight of W = 200 N and it slides down a frictionless hill...

Q: A contestant in a winter sports event pulls a 55.0 kg block of ice across a frozen lake with a rope ...

A: Since, friction coefficients are not given but we know that on ice the coefficient of static frictio...

Q: Uniform Circular Motion: A 25kg boy is riding a merry-go-round with a radius of 5m. What is the cent...

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Q: answer neatly The acceleration of a particle is given by a = 3t - 2. a. Find the initial velocity ...

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Q: 1. An object B is moving at a speed of 12m/s and is struck by object A which is moving at a speed of...

A: Given: Mass of object A=14 tons Initial Speed of object A =20 m/s Mass of object B=10 tons Initial S...

Q: A sphere of mass M = 1.30 kg is supported by a string that passes over a pulley at the end of a hori...

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Q: Part A E- (250/r) f N/C, where What is the electric field strength at r= 21.0 cm? ? E = N/C Submit R...

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Q: Suppose 0(t) measures the minimum angle between a clock's minute and hour hands in radians. What is ...

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Q: A ball is shot vertically into the air at a velocity of 56 m/s. After 6 seconds, another ball is sho...

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Q: A mass-spring system performs simple harmonic motion. Figure 1 shows its displacement x as a functio...

A: Given that:- Position time graph is given in the question.

Q: Consider three-point charges at the corners of a triangle, where qa = 7.0×10¬ºC, qB = -3.0x10-°C, an...

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Q: An implanted pacemaker supplies the heart with 72 pulses per min- ute, each pulse providing 6.8 V fo...

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Q: A heat engine: A) A) converts heat input to an equivalent amount of work B B) converts work to an eq...

A: Let heat absorbed by heat engine = H  Let the work done by the heat engine = W 

Q: a) How much current must flow through the circuit for the bulb to consume 12W? b) What should be the...

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Q: Assume that the pressure difference above and below the wing of an airplane in flight is 1.6x10^3 Pa...

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Q: A patient with a pacemaker is mistakenly being scanned for an MRI image. A 10.6-cm-long section of p...

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Q: 5) A stone is thrown vertically upward from the ed ge of a roof 20.0 meters high. Initial velocity i...

A: Given value--- initial speed = 12 m/s. height of roof = 20 m. We have to find--- Find time to hit...

Q: Would either the two-pan beam balance or the electronic balance yield the same result for the mass o...

A: A two-pan balance is a scale with two pans that are balanced against each other.

Q: 6. The Earth has a mass of 5.97 * 1044 kg and the Sun has a mass of 2.00 * 1030 kg. If they are sepa...

A: Given value--- mass of earth = 5.97 × 1024 kg. mass of sun = 2 × 1030 kg. separation = 1.5 × 108 km...

Q: A supply plane needs to drop a package of supplies to people working on a project in a New Zealand. ...

A: Given: height of plane h = 50 m speed u = 40 m/s

Q: 2. Circle coil area 3.0 square centimeter Placed in a uniform magnetic field (B) 0.5 tesla, directed...

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Q: A 20 kg box rests on a table. a) What force does the earth exert on the box? Draw a free body diagra...

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Q: Aila is running at 5 m/s to catch the school bus, which is stopped to a nearby bus stop. When Aila i...

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Q: The graph (attached) shows the x component of a force that acts on an object that moves on the x axi...

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Q: A barber raises his customer’s chair by applying a force of 100N to a hydraulic piston of area 0.01 ...

A: Given data: Force on chair F1 = 100 N Area of hydraulic piston A1 = 0.01 m2 Area of new piston attac...

Q: Clarissa is running at 5m/s to catch the school bus, which is stopped to a nearby bus stop. When Cla...

A: We can use three equation of motion to solve the problem  v = u + at. v² = u² + 2as. s = ut + ½at²

Q: Find the momentum (multiply) for a (20.0±0.6)kg object traveling at (15±0.6)m/s

A: Given value--- mass = (20.0±0.6)kg. speed = (15±0.6)m/s. We have to find--- momentum ?

Q: A 2479 Ib car is moving up a 13 degree incline as shown. If it took 7 s for the car to decelerate fr...

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Q: 6. A steel beam is placed vertically in the basement of a building to keep the floor above from sagg...

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Q: 5. Suppose hat a particular muchine in a facfoal has two 'steel pieces that must (ub against each ot...

A: